Working example POST in android

Here is another short (IMHO) example how to post in android app.

private void postSms(String text) {
URL url;
HttpURLConnection urlConnection = null;

try {
url = new URL(“”);
urlConnection = (HttpURLConnection) url.openConnection();

List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair(“sms”, text));//POST param as “sms”

OutputStream os = urlConnection.getOutputStream();
BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(os, “UTF-8”));

String status = new String(Streams.getBytes(urlConnection.getInputStream()));
Log.d(TAG, new Exception().getStackTrace()[0].getMethodName() + “:insert status=” + status);

} catch (MalformedURLException | ProtocolException e) {
} catch (IOException e) {

This is a method for concatenating parameters for POST

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Working example – changing drawable background in runtime, dynamically

Here is a short example code how to do it:
I’ve created xml file shape.xml and one method for flexible changing color of shape.

<?xml version=”1.0″ encoding=”utf-8″?>
<shape xmlns:android=”” >
<solid android:color=”@android:color/holo_blue_bright” />
<corners android:radius=”30dp” />
android:width=”15dp” />

And here is a method for flexible changing color:

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Working example of setting alarm with repeating stuff, checking if alarm was set with pendingIntent

Here is short and quite (imho) understanding part of code:

[java]//starting #1
AlarmManager alarmManager = (AlarmManager) getActivity().getSystemService(Context.ALARM_SERVICE);
Intent intent = new Intent(getActivity(), MyReceiver.class);
intent.setAction(MyReceiver.ACTION_ALARM_RECEIVER);//my custom string action name
PendingIntent pendingIntent = PendingIntent.getBroadcast(getActivity(), 1001, intent, PendingIntent.FLAG_CANCEL_CURRENT);//used unique ID as 1001
alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, System.currentTimeMillis(), aroundInterval, pendingIntent);//first start will start asap[/java]

#1 – first we are getting alarm service. We create own intention and setting own action to it to be able handle in onReceive(), in our receiver class. Then the intention is putting into pendingIntent. The complete pendingIntent is used by alarmManager for a start.
I used System.currentTimeMillis() because I wanted start repeating asap.
I used flag PendingIntent.FLAG_CANCEL_CURRENT for pendingIntent but it might be also PendingIntent.FLAG_UPDATE_CURRENT. It is important to use the same flag everywhere, but when you want stop it, you use PendingIntent.FLAG_NO_CREATE. I will write about it later.
Number 1001 in pendingIntent was used just to be know that our intention has unique ID.

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